Machine for interfolding paper



Feb. 9

, Y 1,572,817 G. A. SHAFFERv ET Al. Y

MACHINE FOR INTERFOLDING PAPER Filed Dec. 31, 1924 6 sheets-Sheet 1 HW/RT A TTORNE YS.

` Feb. 9 1926.

G. A. SHAFFER ET AL MACHINE FOR INTERFOLDING PAEER Filed Dec, 31, 1924 5She9ts sheet g Feb. '9 1926.

Filed Dec. 51, 1924 6 Sheetssheet 3 GLENN H SHHFFER INVENTORJFP//v/fL//v IfI//RTZ f ATTORNEYS.

1,572,817 G. A. SHAFFER ET AL n MACHINE FOR INTERFOLDING PAPER Feb. 91926.

Filed Dec. 5l. 1924 5 Sheets-Sheet, 4

Feb. 9 1926. 1,572,817

G. A. SHAFFER ET AL V MACHINE FOR INTERFOLDING PAPER Filed Deo, 3l, 19246 sheets sheet 5 W I Il a I man@ I Yim wlw lll rHI. W \v\ .nm \\\MM l2la /a 55 55 55 A E E /E Feb. 9 1926. 1,572,817

G. A. SHAFFER ET AL l MACHINE FOR INTERFOLDING `PAPER Filed Deo. 3l,1924 6 SheetSK-Sheet 6 f7.5 7 fir,` f7@ 7 32 3B 3 F 1G /0 F/q,` Hc /2Flc; 6

GL EN# H. JHHFFER INVENTOR.

FRHN/f hf M//RTZ BYl idatented eh. d,

GLENN A. SHAFFER AND FRANKLIN H. WIRTZ, 0F GREEN BAY, WISCONSN.

MACHINE FDR INTERJEOLDJING PAPER.

Application'led December 31, 1924. Serial No. 759,059`s T0 all whom 'itmay concern.'

Be it known that we, GLENN A. SHArrua, a subject of the King of GreatBritain, and FRANKLIN H. VVnrrz, a citizen ofthe United States, residingat Green Bay, in the county of Brown and. State of lVisconsin, haveinvented certain new and useful lmprovements in Machines forInterfolding Paper, of which the following is a specification.

The invention relates to foldingr machines, and more especially to theclass of machines for the'folding and interfolding of paper sheets forpackaging thereof.

\ The primary object of the invention is the provision of a machine ofthis character, wherein paper in superimposed webs is fed into the sameat one end, and these webs are cut into predetermined length andthereafter folded or interfolded in a novel manner so as to produce aluralityof interfolded units, which may be packaged in their series forsubsequent consumption.

Another object. of the invention is the provision of a machine of thischaracter, wherein the folding and interfolding mechanism is of novelform and construction to assure perfect action and positiveness in theoperation thereof` whereby the paper units in series will be folded andinterfolded in a single operation of the machine.

A further object of the invention is the provision ofa machine of thischaracter, wherein two or more superposed sheets of paper or webs willbe cut into predetermined units, which will be automatically folded sothat the terminal portions of advanced units will be interfolded withsucceeding units, in such manner that the withdrawal of one unit fromacabinet containing a package of interfolded units will leave theterminal portions of the succeeding unit exposed A still further objectof the invention is the provision of a machine of this character,wherein the cutting and folding and interfolding mechanisms willautomatically operate in unison, for the cutting, folding andinterfolding actions, and the continuous' stacking of the interfoldedsheets in a trough for the convenient packing of the same prior toremoval of the assembled units orsheets from the machine.

A still further object of the invention is the provision of a` machineof this character, wherein the parts thereof are comparatively simpleand assembled in a novel manner, to assure thorough reliability andeficiency in thc operation thereof, durability and minimum expense forinstallation.

lVth these and other objects in View the invention consists in certainnovel features of construction and combinations and arrangements ofparts as will be hereinafter fully described in detail, illustrated inthe accompanying drawings and pointed out in the claims hereuntoappended.

In the accompanying drawings:

Figure l, is a fragmentary side elevation of the machine constructed inaccordance with the invention. c

Figure 2, is an end elevation taken from the rear of the machine.

Figure 3, is a top plan view of the machine.

Figure 4, is an enlarged fragmentary longitudinal sectional view showingin detail the cutting and folding and interfolding mechanisms.

Figure 5, is a transverse sectional view taken on the line 5-5 of'Figure 1.

Figure 6, is a fragmentary sectional elevation taken through theoperating cams.

Figure 7, is a fragmentary detail elevation, showing one position of thetucker arms, during the folding and interfolding operations of the same.

Figures 8, 9, 10, 11, and 12, are fragmentary detail `views showing thefolding blades in the different positions with relation to the paperduring the folding and interfolding operations of the machine.

Similar reference characters indicate corresponding p arts throughoutthe several views in the drawings.

Referring to the drawings in detail, A, designates generally the bed ofthes stand of the machine, andB, the supporting legs thereof, andl atone portion. of the bed A, is the combined cutting and folding andinterfolding mechanisms C., 'and D, respectively, while at the otherportion of said bed is a trough E, for receiving the assembled foldedand interfol'ded units or sheets, whereby the same can be packaged andlabelled prior to leaving the machine.

Mounted on the bed A, at the portion thereof occupied by the cutting andfol-ding and interfolding mechanisms C, and D, is a frame structure 10,having suitably supported therein at the upper portion of the same aguide plate 11, over which travels superposed webs or sheets of paper`12, the latter being directed thereto from a large supply roll(notrshown), and are fed between an lupper pinch roll 13, and a lowerbed roll 14, the latter also serving as a measuring roll to measure offa predetermined length of paper. The pinch roll 13, has its axle 15,journaled in adjustable eccentric pivot 16, mounted in the framestructure, while the bed roll 14` has its shaft 17, journaled inbearings 18, in the frame structure.

Arranged spaced from the pinch roll 13. is a guide roll 19, the journal20, thereof being supported by an adjustable eccentric pivot 21, mountedin the fra-me structure 10, while located between these rolls 13 and12), is aknife shaft 23, having fitted therein a knife or cutter 24,which engages in channels 25, formed equidistantly lfrom each other inthe periphery of the bed roll 14, whereby during the rotation of thelatter and the knife shaft the paper 12, will be severed inpredetermined lengths to form successive sheets or units during theworking of the machine.

Mounted in proximity to the bed roll 14, and the guide roll 19, aresuperposed strippers 26, and 27, respectively, to prevent the.. severedsheets or units from following these rolls 14 and 19, circumferentiallyof the same, and to pass between said strippers, the stripper 26, beingformed in its lower half with a pocket 28, and step 29, for a purposepresently described.

Located below the guide plate 11, are superposed reciprocatory andswinging tucker arms 30, and 31, respectively, each formed at its freeend with a tucker head 32, while the opposite ends of said arms arepivoted at 33, to oscillatory levers 34, and 35, respectively, the lever34, being keyed to shaft 36, journaled in bearings 37, and likewise`l'ever 35, is keyed to shaft 38jour naled in bearings 39, which withthe bearing 437, are sujita'bly mounted on the frame structure 10.

The tucker arms`30 and 31, are fitted with rollers 40, which engage acam 41, carried on a shaft 42, journaled in bearings 43, and in thismanner these arms 30 and 31, move toward and away from each other. Aspring 44, which is suitably mounted acts upon the arms 30 and 31, tohold the rollers 40. in constant contact with the cam 41, as will be aparent.

The shaft arms 45, which are cause-d to operate in unison through themedium of a connecting rod 46, pivoted thereto at 47, while connected tothe shaft 38, is another arm 48, the same .being fitted at its free endwith a roller 49, adapted to travel upon a cam 50, mounted on the shaft42, and in this manner the said tucker arms areV reciprocated for apurpose presently describf" l..

Engaged with and acting upon the cons 36, and-38, have keyed thereto,

necting rod 46, is a spring 51, which serves to hold the roller 49,against the cam 50, throughout the operation of ,the maclune.

The tucker heads 32, of the arms 30, andL 31, are arranged between theinner open mouth end of the trough E, and the strippers 26, and 27, andserve to interfold the units or sheets and push the same into saidtrough for the subsequent bundling and labelling in packaging thereof.

0n the shaft 17, at one side of the frame 10, is a chain sprocket 52,having trained thereover a Sprocket chain 53, the same being alsotrained over a chain sprocket 54, on the shaft 42, the shaft 17 at theother side of the frame 10, being driven from any suitable source ofmotive power.

The bed roll 17 and rolls 13, '19, and also knife shaft 23, are properlytimed in driving connection with each other in any suitable manner.

In the operation of the machine, the sheet or sheets 12, of paper areintroduced into the machine to travel over the guide platt` 11, and passbetween the bed roll 14, and pinch roll 15, to be acted upon by theknife 24,'and this bed roll 14 cooperating with the knife shaft 23,measures off single or matched double units, which are cut into unitform by the knife, whereupon Said units are stripped from the bed roll14, and the guide roll 19, so as to pass between the stripper members 26and 27, the former stripper being, formed with the pocket 28, and step29, which will allow the furthest advanced unit including a sheet orpair of superimposed sheets to drop down into the pocket 28, so that thenext succeding unit will overlap the precedingI unit. At this point thetucker arm 30, moves in a downward direction and then in a backwardcourse, getting under the overlapped unit.

Now, the tucker arm 30, comes up catching the units overlapped betweenthe heads 32, of both tucker arms 30 and 31, and after the tucker arm30, has reached its maximum upward stroke, the tucker arm 31, movesupward and backward folding the units over the point 55, of the head 32,on thetucker arm 30, the upward and downward movements of the tuckerarms 30, and 31, being accomplished by the cam 41, hereinbeforedescribed.

The backward and forward movements of the arms 30, and 31, areaccomplished by the cam 50, as will be apparent. These last namedmovements of the arms 30, and 31, serve to press ,the massed interfoldedassemblage of the units into the trough E, for the stacking thereof, toenable the subsequent packing and labelling of the same.

rI lhe roll 14, is mounted on and free to rotate around shaft 17, the`latter being held in the frames 10, in a fixed position by the nuts oneach end-of the shaft 17.

'the upper strippers ilo, are mounted on a shaft h5, and are spacedl al`intervals to coincide with the grooves in the bed roll ll), and theentire assembly of the strippers is free to swing about shaft 2t),whereby the strippers can be lifted out of the opcrators way whenthreading the machine with a new sheet of paper. 'l`he linl 22, makesthe connection between vshaft 20, and thc stripper l'Vhat is claimed is:

l. A machine otthe character described, comprising a stand, a guideplate on the stand, means for feeding sheets onto the plate, means forcutting the sheets successively into units, strippersadjacent to thecutting n'ieans, one of the strippers beingr constructed and arranged toposition the units adjacent to each other in overlapped relation to eachother, tncli'cr means includ ing pivotally connected members on oppositesides of the path of the units, and mechanism for actuating the tnckcrmeans for effecting the inter-folding of said units and the pressing ofthe same in an assembled mass. ,y t

2. A machine yof the character described, comprising a stand, a guideplate on the stand, means for feeding sheets onto the plate, meanssively into units, strippers adjacent to the cutting means, one of thestrippers being constructed and arranged to position the units adjacentto each other in overlapped relation to one another, tricher means onopposite sides ofthe path of the units, mechanism for actuating thetucker means for effecting the interfolding of said units and pressingthe same in an assembled mass, and means for receiving the mass from the'tricher means.

f Y 3. ln a machine of the character described,

the combination of, means for cutting and feeding the Work material,means for strip ping the cut material from the feed means and having apocket for the overlapping of adjacent cnt pieces, and pivotal swingingmembers having tuckers on opposite sides ofthe pocket for folding andinterfolding the overlapped pieces into massed assembled form.

Il. ln a machine of the character described, the combination of, meansfor cutting and feeding the work material, means for stripping the cutmaterial from the feed means and adapted to position adjacent cnt piecesinto relation for the interfolding thereof, swinging tnclers for foldingand interfelding the positioned pieces into massed assembled form., andmeans for receiving the massed assembled pieces.

ln a machine. of the character described, the ceiinbinatioirof, meansfor' cutting and feeding the work materia-l, means for stripping the cutmaterial from the feed means for cutting the sheets succes-v ainladapterl to position adjacent out pieces in overlapped relation, meansfor folding and ifntelfolding the positionedpicces intomassed assembledform, comprising, a pair of opposed reciprocatory and i incl-er armshaving. tncking heads at their free ends. i i i h. ln a machine of thecharacter described, the combination of, means for cutting and feedingthe worli material, means for stripping the eut material from the'feeding means and adapted to position adjacent cut pieces in overlappedrelation one to means ttor folding aml'interfolding the positionedpieces into massed assembled form,

comprising, a pair of opposed reciin'ocatory` and swinging tuclier armshaving tucking heads at their free ends, and means located next to theheads for receiving the massed assembled pieces.

7. ln a machine of the class described, in combination, opposed tuckerarms, tncker hars each haring an end mounted on one of said arms, amovable pivot for-each of said arms, means for moving said armsalternately out of and into positions where said bars overlap, meansacting'npon said pivots to produce longitudinal reciprocatory n'iovementot said arms while said bars are separated to canse them to alternate intheir overlapped position, and means to feed successive sheets ofmaterial overlapping position sheets in interfolded relation.

8. ln a machine of the class described, in combination, a frame, a pairof shafts journaledin said frame, bell cranks mounted on whereby to foldsaid said shafts, a pair of tucker arms pivoted one on each of said bellcranks, a tncker bar engaging the free end of each arm, said bars innormally overlapping relation, means to alternately move said arms outof position Where said bars overlap, means to operate said bell crankswhereby to reciprocate said arms to reverse the overlapping relation ofsaid bars at each irst-named movement of said arms, and means to feedsuccessive sheets of material in overlapping relation to position to beinterfolded by said bars.

9. ln a machine of the class described, in combination, a frame, a pairofy parallel shafts jonrnaled-in said frame, pairs of bell cranksmounted on said shafts, a pair of tricher arms at each side of the framepivoted one on each of said bell cranks, a tricher bar engaging the freeends ofcorresponding bars of each pair, said tricher bars normallystanding in overlapping relation, means to alternately movecorresponding arms o l said pairs ont of the position Where said harsoverlap, means to operate said bell cranks whereby to reciprocate saidarms to reverse the overlapping relation of said bars at eachfirst--nan'ied moverment of said arms, and means to feed successiveswinging to said bars in' the other,

Sheelsof material in overlapping` relation lo position, to heinterfolded by said bars.

l0. In a machine of the class described, in combination, a frame, a pairof parallel shafts journaled in said frame, pairs of bell cranks mountedon said shafts, a pair of tuoker arms at each side of the frame pivotedone on each of said bell cranks, a tucker bar engaging the free ends ofcorresponding bars oi each pair, said tueker bars norn1ally` standing inoverlapping relation, means to alternately move Corresponding arms ofsaid pairs, means to oscilla-te said shafts to cause the pivot-bearingends of said hel] cranks lo move in opposite direc- 16 tions, themovement of oscillation of said shafts being alternately reversed,whereby to reciprocate said arms to reverse the overlappingr relation ofsaid bars at each firstnamed movement of said arms, and means 0 GLENN A.SHAFFER. FRANKLIN H. WIRTZ.

